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                <h1 id="AJAX"><a href="#AJAX" class="headerlink" title="AJAX"></a>AJAX</h1><h2 id="AJAX概述"><a href="#AJAX概述" class="headerlink" title="AJAX概述"></a>AJAX概述</h2><p><strong>AJAX = Asynchronous JavaScript and XML（异步的 JavaScript 和 XML）</strong></p>
<p>AJAX 是一种在无需重新加载整个网页的情况下，能够更新部分网页的技术。</p>
<p><strong>Ajax 不是一种新的编程语言，而是一种用于创建更好更快以及交互性更强的Web应用程序的技术。</strong></p>
<h2 id="AJAX实现"><a href="#AJAX实现" class="headerlink" title="AJAX实现"></a>AJAX实现</h2><p>jQuery 提供多个与 AJAX 有关的方法。</p>
<p>Ajax的核心是XMLHttpRequest对象(XHR)。XHR为向服务器发送请求和解析服务器响应提供了接口。能够以异步方式从服务器获取新数据。</p>
<p>通过 jQuery AJAX 方法，您能够使用 HTTP Get 和 HTTP Post 从远程服务器上请求文本、HTML、XML 或 JSON – 同时您能够把这些外部数据直接载入网页的被选元素中。</p>
<pre><code>jQuery.ajax(...)
       部分参数：
              url：请求地址
             type：请求方式，GET、POST（1.9.0之后用method）
          headers：请求头
             data：要发送的数据
      contentType：即将发送信息至服务器的内容编码类型(默认: &quot;application/x-www-form-urlencoded; charset=UTF-8&quot;)
            async：是否异步
          timeout：设置请求超时时间（毫秒）
       beforeSend：发送请求前执行的函数(全局)
         complete：完成之后执行的回调函数(全局)
          success：成功之后执行的回调函数(全局)
            error：失败之后执行的回调函数(全局)
          accepts：通过请求头发送给服务器，告诉服务器当前客户端可接受的数据类型
         dataType：将服务器端返回的数据转换成指定类型
            &quot;xml&quot;: 将服务器端返回的内容转换成xml格式
           &quot;text&quot;: 将服务器端返回的内容转换成普通文本格式
           &quot;html&quot;: 将服务器端返回的内容转换成普通文本格式，在插入DOM中时，如果包含JavaScript标签，则会尝试去执行。
         &quot;script&quot;: 尝试将返回值当作JavaScript去执行，然后再将服务器端返回的内容转换成普通文本格式
           &quot;json&quot;: 将服务器端返回的内容转换成相应的JavaScript对象
          &quot;jsonp&quot;: JSONP 格式使用 JSONP 形式调用函数时，如 &quot;myurl?callback=?&quot; jQuery 将自动替换 ? 为正确的函数名，以执行回调函数
</code></pre>
<h1 id="AJAX实现登录"><a href="#AJAX实现登录" class="headerlink" title="AJAX实现登录"></a>AJAX实现登录</h1><h2 id="web-xml"><a href="#web-xml" class="headerlink" title="web.xml"></a><strong>web.xml</strong></h2><pre class=" language-xml"><code class="language-xml"><span class="token prolog">&lt;?xml version="1.0" encoding="UTF-8"?></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>beans</span> <span class="token attr-name">xmlns</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>http://www.springframework.org/schema/beans<span class="token punctuation">"</span></span>
       <span class="token attr-name"><span class="token namespace">xmlns:</span>xsi</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>http://www.w3.org/2001/XMLSchema-instance<span class="token punctuation">"</span></span>
       <span class="token attr-name"><span class="token namespace">xmlns:</span>context</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>http://www.springframework.org/schema/context<span class="token punctuation">"</span></span>
       <span class="token attr-name"><span class="token namespace">xmlns:</span>mvc</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>http://www.springframework.org/schema/mvc<span class="token punctuation">"</span></span>
       <span class="token attr-name"><span class="token namespace">xsi:</span>schemaLocation</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        https://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/mvc
        https://www.springframework.org/schema/mvc/spring-mvc.xsd<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
 
    <span class="token comment" spellcheck="true">&lt;!-- 自动扫描指定的包，下面所有注解类交给IOC容器管理 --></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span><span class="token namespace">context:</span>component-scan</span> <span class="token attr-name">base-package</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>com.kuang.controller<span class="token punctuation">"</span></span><span class="token punctuation">/></span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span><span class="token namespace">mvc:</span>default-servlet-handler</span> <span class="token punctuation">/></span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span><span class="token namespace">mvc:</span>annotation-driven</span> <span class="token punctuation">/></span></span>
 
    <span class="token comment" spellcheck="true">&lt;!-- 视图解析器 --></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>bean</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>org.springframework.web.servlet.view.InternalResourceViewResolver<span class="token punctuation">"</span></span>
          <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>internalResourceViewResolver<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
        <span class="token comment" spellcheck="true">&lt;!-- 前缀 --></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>property</span> <span class="token attr-name">name</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>prefix<span class="token punctuation">"</span></span> <span class="token attr-name">value</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>/WEB-INF/jsp/<span class="token punctuation">"</span></span> <span class="token punctuation">/></span></span>
        <span class="token comment" spellcheck="true">&lt;!-- 后缀 --></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>property</span> <span class="token attr-name">name</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>suffix<span class="token punctuation">"</span></span> <span class="token attr-name">value</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>.jsp<span class="token punctuation">"</span></span> <span class="token punctuation">/></span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>bean</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>beans</span><span class="token punctuation">></span></span>
</code></pre>
<h2 id="编写一个AjaxController"><a href="#编写一个AjaxController" class="headerlink" title="编写一个AjaxController"></a>编写一个AjaxController</h2><pre class=" language-java"><code class="language-java"><span class="token annotation punctuation">@Controller</span>
<span class="token keyword">public</span> <span class="token keyword">class</span> <span class="token class-name">AjaxController</span> <span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span>
 
    <span class="token annotation punctuation">@RequestMapping</span><span class="token punctuation">(</span><span class="token string">"/a1"</span><span class="token punctuation">)</span>
    <span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">ajax1</span><span class="token punctuation">(</span>String name <span class="token punctuation">,</span> HttpServletResponse response<span class="token punctuation">)</span> <span class="token keyword">throws</span> IOException <span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span>
        <span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token string">"admin"</span><span class="token punctuation">.</span><span class="token function">equals</span><span class="token punctuation">(</span>name<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span>
            response<span class="token punctuation">.</span><span class="token function">getWriter</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">print</span><span class="token punctuation">(</span><span class="token string">"true"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span><span class="token keyword">else</span><span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span>
            response<span class="token punctuation">.</span><span class="token function">getWriter</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">print</span><span class="token punctuation">(</span><span class="token string">"false"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span>
    <span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span>
    
    <span class="token annotation punctuation">@RequestMapping</span><span class="token punctuation">(</span><span class="token string">"/a2"</span><span class="token punctuation">)</span>
<span class="token keyword">public</span> List<span class="token operator">&lt;</span>User<span class="token operator">></span> <span class="token function">ajax2</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span>
    List<span class="token operator">&lt;</span>User<span class="token operator">></span> list <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">ArrayList</span><span class="token operator">&lt;</span>User<span class="token operator">></span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    list<span class="token punctuation">.</span><span class="token function">add</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">User</span><span class="token punctuation">(</span><span class="token string">"秦疆1号"</span><span class="token punctuation">,</span><span class="token number">3</span><span class="token punctuation">,</span><span class="token string">"男"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    list<span class="token punctuation">.</span><span class="token function">add</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">User</span><span class="token punctuation">(</span><span class="token string">"秦疆2号"</span><span class="token punctuation">,</span><span class="token number">3</span><span class="token punctuation">,</span><span class="token string">"男"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    list<span class="token punctuation">.</span><span class="token function">add</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">User</span><span class="token punctuation">(</span><span class="token string">"秦疆3号"</span><span class="token punctuation">,</span><span class="token number">3</span><span class="token punctuation">,</span><span class="token string">"男"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token keyword">return</span> list<span class="token punctuation">;</span> <span class="token comment" spellcheck="true">//由于@RestController注解，将list转成json格式返回</span>
<span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span>
    <span class="token annotation punctuation">@RequestMapping</span><span class="token punctuation">(</span><span class="token string">"/a3"</span><span class="token punctuation">)</span>
<span class="token keyword">public</span> String <span class="token function">ajax3</span><span class="token punctuation">(</span>String name<span class="token punctuation">,</span>String pwd<span class="token punctuation">)</span><span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span>
    String msg <span class="token operator">=</span> <span class="token string">""</span><span class="token punctuation">;</span>
    <span class="token comment" spellcheck="true">//模拟数据库中存在数据</span>
    <span class="token keyword">if</span> <span class="token punctuation">(</span>name<span class="token operator">!=</span>null<span class="token punctuation">)</span><span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span>
        <span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token string">"admin"</span><span class="token punctuation">.</span><span class="token function">equals</span><span class="token punctuation">(</span>name<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span>
            msg <span class="token operator">=</span> <span class="token string">"OK"</span><span class="token punctuation">;</span>
        <span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span><span class="token keyword">else</span> <span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span>
            msg <span class="token operator">=</span> <span class="token string">"用户名输入错误"</span><span class="token punctuation">;</span>
        <span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span>
    <span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span>
    <span class="token keyword">if</span> <span class="token punctuation">(</span>pwd<span class="token operator">!=</span>null<span class="token punctuation">)</span><span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span>
        <span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token string">"123456"</span><span class="token punctuation">.</span><span class="token function">equals</span><span class="token punctuation">(</span>pwd<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span>
            msg <span class="token operator">=</span> <span class="token string">"OK"</span><span class="token punctuation">;</span>
        <span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span><span class="token keyword">else</span> <span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span>
            msg <span class="token operator">=</span> <span class="token string">"密码输入有误"</span><span class="token punctuation">;</span>
        <span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span>
    <span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span>
    <span class="token keyword">return</span> msg<span class="token punctuation">;</span> <span class="token comment" spellcheck="true">//由于@RestController注解，将msg转成json格式返回</span>
<span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span>
 
<span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="编写index-jsp测试"><a href="#编写index-jsp测试" class="headerlink" title="编写index.jsp测试"></a>编写index.jsp测试</h2><pre class=" language-java"><code class="language-java"><span class="token operator">&lt;</span><span class="token operator">%</span>@ page contentType<span class="token operator">=</span><span class="token string">"text/html;charset=UTF-8"</span> language<span class="token operator">=</span><span class="token string">"java"</span> <span class="token operator">%</span><span class="token operator">></span>
<span class="token operator">&lt;</span>html<span class="token operator">></span>
  <span class="token operator">&lt;</span>head<span class="token operator">></span>
    <span class="token operator">&lt;</span>title<span class="token operator">></span>$Title$<span class="token operator">&lt;</span><span class="token operator">/</span>title<span class="token operator">></span>
    <span class="token operator">&lt;</span><span class="token operator">%</span><span class="token operator">--</span><span class="token operator">&lt;</span>script src<span class="token operator">=</span><span class="token string">"https://code.jquery.com/jquery-3.1.1.min.js"</span><span class="token operator">></span><span class="token operator">&lt;</span><span class="token operator">/</span>script<span class="token operator">></span><span class="token operator">--</span><span class="token operator">%</span><span class="token operator">></span>
    <span class="token operator">&lt;</span>script src<span class="token operator">=</span><span class="token string">"$&amp;#123;pageContext.request.contextPath&amp;#125;/statics/js/jquery-3.1.1.min.js"</span><span class="token operator">></span><span class="token operator">&lt;</span><span class="token operator">/</span>script<span class="token operator">></span>
    <span class="token operator">&lt;</span>script<span class="token operator">></span>
        function <span class="token function">a1</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span>
            $<span class="token punctuation">.</span><span class="token function">post</span><span class="token punctuation">(</span><span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span>
                url<span class="token operator">:</span><span class="token string">"$&amp;#123;pageContext.request.contextPath&amp;#125;/a1"</span><span class="token punctuation">,</span>
                data<span class="token operator">:</span><span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span><span class="token string">'name'</span><span class="token operator">:</span>$<span class="token punctuation">(</span><span class="token string">"#txtName"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">val</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span><span class="token punctuation">,</span>
                success<span class="token operator">:</span><span class="token function">function</span> <span class="token punctuation">(</span>data<span class="token punctuation">,</span>status<span class="token punctuation">)</span> <span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span>
                    <span class="token function">alert</span><span class="token punctuation">(</span>data<span class="token punctuation">)</span><span class="token punctuation">;</span>
                    <span class="token function">alert</span><span class="token punctuation">(</span>status<span class="token punctuation">)</span><span class="token punctuation">;</span>
                <span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span>
            <span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span>
    <span class="token operator">&lt;</span><span class="token operator">/</span>script<span class="token operator">></span>
  <span class="token operator">&lt;</span><span class="token operator">/</span>head<span class="token operator">></span>
  <span class="token operator">&lt;</span>body<span class="token operator">></span>
 
  <span class="token operator">&lt;</span><span class="token operator">%</span><span class="token operator">--</span>onblur：失去焦点触发事件<span class="token operator">--</span><span class="token operator">%</span><span class="token operator">></span>
  用户名<span class="token operator">:</span><span class="token operator">&lt;</span>input type<span class="token operator">=</span><span class="token string">"text"</span> id<span class="token operator">=</span><span class="token string">"txtName"</span> onblur<span class="token operator">=</span><span class="token string">"a1()"</span><span class="token operator">/</span><span class="token operator">></span>
 
  <span class="token operator">&lt;</span><span class="token operator">/</span>body<span class="token operator">></span>
<span class="token operator">&lt;</span><span class="token operator">/</span>html<span class="token operator">></span>
</code></pre>
<h2 id="Springmvc实现"><a href="#Springmvc实现" class="headerlink" title="Springmvc实现"></a><strong>Springmvc实现</strong></h2><p>实体类</p>
<pre class=" language-java"><code class="language-java"><span class="token annotation punctuation">@Data</span>
<span class="token annotation punctuation">@AllArgsConstructor</span>
<span class="token annotation punctuation">@NoArgsConstructor</span>
<span class="token keyword">public</span> <span class="token keyword">class</span> <span class="token class-name">User</span> <span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span>
 
    <span class="token keyword">private</span> String name<span class="token punctuation">;</span>
    <span class="token keyword">private</span> <span class="token keyword">int</span> age<span class="token punctuation">;</span>
    <span class="token keyword">private</span> String sex<span class="token punctuation">;</span>
 
<span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span>
</code></pre>
<p>前端页面</p>
<pre class=" language-java"><code class="language-java"><span class="token operator">&lt;</span><span class="token operator">%</span>@ page contentType<span class="token operator">=</span><span class="token string">"text/html;charset=UTF-8"</span> language<span class="token operator">=</span><span class="token string">"java"</span> <span class="token operator">%</span><span class="token operator">></span>
<span class="token operator">&lt;</span>html<span class="token operator">></span>
<span class="token operator">&lt;</span>head<span class="token operator">></span>
    <span class="token operator">&lt;</span>title<span class="token operator">></span>ajax<span class="token operator">&lt;</span><span class="token operator">/</span>title<span class="token operator">></span>
    <span class="token operator">&lt;</span>script src<span class="token operator">=</span><span class="token string">"$&amp;#123;pageContext.request.contextPath&amp;#125;/statics/js/jquery-3.1.1.min.js"</span><span class="token operator">></span><span class="token operator">&lt;</span><span class="token operator">/</span>script<span class="token operator">></span>
    <span class="token operator">&lt;</span>script<span class="token operator">></span>
 
        function <span class="token function">a1</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span>
            $<span class="token punctuation">.</span><span class="token function">post</span><span class="token punctuation">(</span><span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span>
                url<span class="token operator">:</span><span class="token string">"$&amp;#123;pageContext.request.contextPath&amp;#125;/a3"</span><span class="token punctuation">,</span>
                data<span class="token operator">:</span><span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span><span class="token string">'name'</span><span class="token operator">:</span>$<span class="token punctuation">(</span><span class="token string">"#name"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">val</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span><span class="token punctuation">,</span>
                success<span class="token operator">:</span><span class="token function">function</span> <span class="token punctuation">(</span>data<span class="token punctuation">)</span> <span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span>
                    <span class="token keyword">if</span> <span class="token punctuation">(</span>data<span class="token punctuation">.</span><span class="token function">toString</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token operator">==</span><span class="token string">'OK'</span><span class="token punctuation">)</span><span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span>
                        $<span class="token punctuation">(</span><span class="token string">"#userInfo"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">css</span><span class="token punctuation">(</span><span class="token string">"color"</span><span class="token punctuation">,</span><span class="token string">"green"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
                    <span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span><span class="token keyword">else</span> <span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span>
                        $<span class="token punctuation">(</span><span class="token string">"#userInfo"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">css</span><span class="token punctuation">(</span><span class="token string">"color"</span><span class="token punctuation">,</span><span class="token string">"red"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
                    <span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span>
                    $<span class="token punctuation">(</span><span class="token string">"#userInfo"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">html</span><span class="token punctuation">(</span>data<span class="token punctuation">)</span><span class="token punctuation">;</span>
                <span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span>
            <span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span>
        function <span class="token function">a2</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span>
            $<span class="token punctuation">.</span><span class="token function">post</span><span class="token punctuation">(</span><span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span>
                url<span class="token operator">:</span><span class="token string">"$&amp;#123;pageContext.request.contextPath&amp;#125;/a3"</span><span class="token punctuation">,</span>
                data<span class="token operator">:</span><span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span><span class="token string">'pwd'</span><span class="token operator">:</span>$<span class="token punctuation">(</span><span class="token string">"#pwd"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">val</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span><span class="token punctuation">,</span>
                success<span class="token operator">:</span><span class="token function">function</span> <span class="token punctuation">(</span>data<span class="token punctuation">)</span> <span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span>
                    <span class="token keyword">if</span> <span class="token punctuation">(</span>data<span class="token punctuation">.</span><span class="token function">toString</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token operator">==</span><span class="token string">'OK'</span><span class="token punctuation">)</span><span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span>
                        $<span class="token punctuation">(</span><span class="token string">"#pwdInfo"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">css</span><span class="token punctuation">(</span><span class="token string">"color"</span><span class="token punctuation">,</span><span class="token string">"green"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
                    <span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span><span class="token keyword">else</span> <span class="token operator">&amp;</span>#<span class="token number">123</span><span class="token punctuation">;</span>
                        $<span class="token punctuation">(</span><span class="token string">"#pwdInfo"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">css</span><span class="token punctuation">(</span><span class="token string">"color"</span><span class="token punctuation">,</span><span class="token string">"red"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
                    <span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span>
                    $<span class="token punctuation">(</span><span class="token string">"#pwdInfo"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">html</span><span class="token punctuation">(</span>data<span class="token punctuation">)</span><span class="token punctuation">;</span>
                <span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span>
            <span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token operator">&amp;</span>#<span class="token number">125</span><span class="token punctuation">;</span>
 
    <span class="token operator">&lt;</span><span class="token operator">/</span>script<span class="token operator">></span>
<span class="token operator">&lt;</span><span class="token operator">/</span>head<span class="token operator">></span>
<span class="token operator">&lt;</span>body<span class="token operator">></span>
<span class="token operator">&lt;</span>p<span class="token operator">></span>
    用户名<span class="token operator">:</span><span class="token operator">&lt;</span>input type<span class="token operator">=</span><span class="token string">"text"</span> id<span class="token operator">=</span><span class="token string">"name"</span> onblur<span class="token operator">=</span><span class="token string">"a1()"</span><span class="token operator">/</span><span class="token operator">></span>
    <span class="token operator">&lt;</span>span id<span class="token operator">=</span><span class="token string">"userInfo"</span><span class="token operator">></span><span class="token operator">&lt;</span><span class="token operator">/</span>span<span class="token operator">></span>
<span class="token operator">&lt;</span><span class="token operator">/</span>p<span class="token operator">></span>
<span class="token operator">&lt;</span>p<span class="token operator">></span>
    密码<span class="token operator">:</span><span class="token operator">&lt;</span>input type<span class="token operator">=</span><span class="token string">"text"</span> id<span class="token operator">=</span><span class="token string">"pwd"</span> onblur<span class="token operator">=</span><span class="token string">"a2()"</span><span class="token operator">/</span><span class="token operator">></span>
    <span class="token operator">&lt;</span>span id<span class="token operator">=</span><span class="token string">"pwdInfo"</span><span class="token operator">></span><span class="token operator">&lt;</span><span class="token operator">/</span>span<span class="token operator">></span>
<span class="token operator">&lt;</span><span class="token operator">/</span>p<span class="token operator">></span>
<span class="token operator">&lt;</span><span class="token operator">/</span>body<span class="token operator">></span>
<span class="token operator">&lt;</span><span class="token operator">/</span>html<span class="token operator">></span>
</code></pre>

                
            </div>
            <hr/>

            

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